Home / 20,836,284.60-31,243,929.30-12,319,231.80

Finding the Fourth Proportional to 20,836,284.60, 31,243,929.30 and 12,319,231.80

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Solution

The fourth proportional to 20,836,284.60, 31,243,929.30 and 12,319,231.80 is: 18,472,641.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,836,284.60 : 31,243,929.30 = 12,319,231.80 : x
  2. Step 2: Convert to fraction form
    20,836,284.60/31,243,929.30 = 12,319,231.80/x
  3. Step 3: Cross multiply
    20,836,284.60x = 31,243,929.30 × 12,319,231.80
  4. Step 4: Simplify right side
    20,836,284.60x = 384,901,207,389,511.75
  5. Step 5: Solve for x
    x = 384,901,207,389,511.75/20,836,284.60
  6. Step 6: Final answer
    x = 18,472,641.11

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.